include/linux/platform_data/voltage-omap.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * OMAP Voltage Management Routines
   4  *
   5  * Copyright (C) 2011, Texas Instruments, Inc.
   6  */
   7
   8 #ifndef __ARCH_ARM_OMAP_VOLTAGE_H
   9 #define __ARCH_ARM_OMAP_VOLTAGE_H
  10
  11 /**
  12  * struct omap_volt_data - Omap voltage specific data.
  13  * @voltage_nominal:    The possible voltage value in uV
  14  * @sr_efuse_offs:      The offset of the efuse register(from system
  15  *                      control module base address) from where to read
  16  *                      the n-target value for the smartreflex module.
  17  * @sr_errminlimit:     Error min limit value for smartreflex. This value
  18  *                      differs at differnet opp and thus is linked
  19  *                      with voltage.
  20  * @vp_errorgain:       Error gain value for the voltage processor. This
  21  *                      field also differs according to the voltage/opp.
  22  */
  23 struct omap_volt_data {
  24         u32     volt_nominal;
  25         u32     sr_efuse_offs;
  26         u8      sr_errminlimit;
  27         u8      vp_errgain;
  28 };
  29 struct voltagedomain;
  30
  31 struct voltagedomain *voltdm_lookup(const char *name);
  32 int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt);
  33 unsigned long voltdm_get_voltage(struct voltagedomain *voltdm);
  34 struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm,
  35                 unsigned long volt);
  36 #endif